Smiling Naya Rivera Steps Out, Flashes Huge Engagement Ring

Naya Rivera, who went public as an engaged woman for the first time last night at Latina magazine's Hollywood Hot List party, was spotted out today in L.A. chatting on her cell phone, sipping a beverage from Coffee Bean & Tea Leaf...and rockin' that huge new rock!

The Glee star couldn't help but show off her big diamond from fiancé Big Sean as she held her keys and coffee in one hand and kept her phone close with the other.

Calling it "classic with a modern twist," jewelry expert Michael O'Connor told E! News that Rivera's ring looked to be close to 4 carats, the diamond a princess cut and in a platinum setting. He estimated that such a ring retails for around $70,000.

Now that must be why they call him Big Sean!

The big engagement news happened to break on the same night that Rivera's Glee character, Santana, shared a kiss with Demi Lovato's Dani.

"I'm Gleekin' heavy," Big Sean, who was scheduled to perform in Montreal tonight, admits in the latest issue of GQ. "How could you not, man, if that was your girlfriend, you'd probably be Gleekin' too!"